87 lines
1.8 KiB
C
87 lines
1.8 KiB
C
/*
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FUNCTION
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<<rename>>---rename a file
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INDEX
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rename
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INDEX
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_rename_r
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ANSI_SYNOPSIS
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#include <stdio.h>
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int rename(const char *<[old]>, const char *<[new]>);
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int _rename_r(void *<[reent]>,
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const char *<[old]>, const char *<[new]>);
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TRAD_SYNOPSIS
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#include <stdio.h>
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int rename(<[old]>, <[new]>)
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char *<[old]>;
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char *<[new]>;
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int _rename_r(<[reent]>, <[old]>, <[new]>)
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char *<[reent]>;
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char *<[old]>;
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char *<[new]>;
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DESCRIPTION
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Use <<rename>> to establish a new name (the string at <[new]>) for a
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file now known by the string at <[old]>. After a successful
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<<rename>>, the file is no longer accessible by the string at <[old]>.
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If <<rename>> fails, the file named <<*<[old]>>> is unaffected. The
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conditions for failure depend on the host operating system.
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The alternate function <<_rename_r>> is a reentrant version. The
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extra argument <[reent]> is a pointer to a reentrancy structure.
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RETURNS
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The result is either <<0>> (when successful) or <<-1>> (when the file
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could not be renamed).
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PORTABILITY
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ANSI C requires <<rename>>, but only specifies that the result on
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failure be nonzero. The effects of using the name of an existing file
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as <<*<[new]>>> may vary from one implementation to another.
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Supporting OS subroutines required: <<link>>, <<unlink>>, or <<rename>>.
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*/
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#include <stdio.h>
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#include <sys/unistd.h>
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#include <reent.h>
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int
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_rename_r (ptr, old, new)
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struct _reent *ptr;
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_CONST char *old;
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_CONST char *new;
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{
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#ifdef HAVE_RENAME
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return _rename (old,new);
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#else
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if (_link_r (ptr, old, new) == -1)
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return -1;
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if (_unlink_r (ptr, old) == -1)
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{
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/* ??? Should we unlink new? (rhetorical question) */
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return -1;
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}
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#endif
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return 0;
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}
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#ifndef _REENT_ONLY
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int
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rename (old, new)
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_CONST char *old;
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_CONST char *new;
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{
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return _rename_r (_REENT, old, new);
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}
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#endif
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